Home / 1,319,363.10-1,979,044.65-420,870.60

Finding the Fourth Proportional to 1,319,363.10, 1,979,044.65 and 420,870.60

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Solution

The fourth proportional to 1,319,363.10, 1,979,044.65 and 420,870.60 is: 631,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,363.10 : 1,979,044.65 = 420,870.60 : x
  2. Step 2: Convert to fraction form
    1,319,363.10/1,979,044.65 = 420,870.60/x
  3. Step 3: Cross multiply
    1,319,363.10x = 1,979,044.65 × 420,870.60
  4. Step 4: Simplify right side
    1,319,363.10x = 832,921,709,272.29
  5. Step 5: Solve for x
    x = 832,921,709,272.29/1,319,363.10
  6. Step 6: Final answer
    x = 631,305.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.